High-order harmonic generation from an atom in a disordered environment
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918514549325824 |
|---|---|
| author | His, Simon Lévêque, Camille Caillat, Jérémie Taïeb, Richard Dubois, Jonathan |
| author_facet | His, Simon Lévêque, Camille Caillat, Jérémie Taïeb, Richard Dubois, Jonathan |
| contents | Using one-dimensional simulations analyzed through the lens of open quantum systems, we study the photoelectron's strong-field dynamics from an atom surrounded by a scattering environment stochastically structured. We theoretically investigate high-order harmonic generation from this situation. We show that local dephasing of the photoelectron wavepacket induced by elastic scattering leads to global decoherence. This drives a transition from quantum to classical behavior, as witnessed by the photoelectron probability density localizing around specific trajectories of the classical analog system: unstable periodic orbits. This phenomenon mirrors quantum scars traditionally observed in the eigenfunctions of time-independent systems, such as quantum billiards. Here, it emerges in-situ within a time-dependent framework, manifesting directly in the real-time dynamics from the ground state rather than solely through spectral analysis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_21223 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High-order harmonic generation from an atom in a disordered environment His, Simon Lévêque, Camille Caillat, Jérémie Taïeb, Richard Dubois, Jonathan Quantum Physics Atomic Physics Using one-dimensional simulations analyzed through the lens of open quantum systems, we study the photoelectron's strong-field dynamics from an atom surrounded by a scattering environment stochastically structured. We theoretically investigate high-order harmonic generation from this situation. We show that local dephasing of the photoelectron wavepacket induced by elastic scattering leads to global decoherence. This drives a transition from quantum to classical behavior, as witnessed by the photoelectron probability density localizing around specific trajectories of the classical analog system: unstable periodic orbits. This phenomenon mirrors quantum scars traditionally observed in the eigenfunctions of time-independent systems, such as quantum billiards. Here, it emerges in-situ within a time-dependent framework, manifesting directly in the real-time dynamics from the ground state rather than solely through spectral analysis. |
| title | High-order harmonic generation from an atom in a disordered environment |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2605.21223 |